Boiler.



v T. T. PARKER. v 101L311; I Arrmoumn 17mm mm, 1910 I 994,656.- Patented June 6,1911.

INVENTORI;

WITNESSES: A

. 1) ,l/Zowzqw,

- T. T. PARKER. I BOILER. I -pr'n1ofl1 on-rnmn mu 2; 1910.

2' sums-sum 2.

99455 6, Patented June 6, 1911.

INVENTOR WlTNESSES;

13 A ztomeysQ the top THOMAS 'r. PARKER, or HACKEKSACKLIIEW.JERSEY'I BOILEBQI Specification of Shetters Patent.

1 Patented une 6,1911.

Application filed July 2,1910. Serial No. 570,108.

T 0 all whom it may concern: Be it known that I, THOMAS T. PARKER, a citizen of the United States, residing in Hackensack, -in the county of Bergen and State of New Jersey, haveinvented certain new and useful Improvements in Boilers, of which the following-is a specification.

This invention relates to steam boilers and aims to provide certain improvements therein.

The principal object of the present invention is to prevent the formation of scale in boilers, especially of thefvertical type, and

the accuniulation'of' other solids upon the tube sheet or other fire-swept surfaces.

Numerous attempts have been made to accomplish a like result, but these have been only partially successful.

In the operation of a boiler the incoming feed water which is usually heated in a. preliminary way israpidly raised to such a temperature that the solids are liberated. If the feed water is directly introduced into the tube system it speedily reachesa temperature at which its ebullition takes place, and a part of the solids are carried up to of the boiler." A certain proportion of these eventually find their way to the bottom surfaces and others become attached to the fire-swept surfaces in the form of; scale. Light and flocculent substances such as oils or some of. the lighter solids retain their position at the top of the boiler for a 'considerable time. It has heretofore been proposed to feed thewater into a small compartment before passing itto the heating. surfaces of the boller with the idea that. all of the solids will be removed from the water actually fed to the boiler by a process of sedimentation. This ,-construction has not. been successful for the reason that=the solids contained inthe water are not given an opportunity 'tosink to the bottom but-are carried 'over' the top of the compartment without being deposited. A.;further ='ob jection :to such a construction is*th'at' the lighter matters inisuspension will not-sink to the bottom; and henceare carried into the boiler proper.-.

In. a -prior application filed by me June 13,1910, Serial. Ito-566,568 I have described and claimed a boiler provided with a large chamber which -is preferably circular and preferably surrounds the bank of tubes. The inside shell of the chamber is exposed on its inner surface to the heat of the boiler water, and isthereby heated to a high heat which heat is transmitted to the water con.- tained in the chamber. By this means the water in the chamber becomes; highly heated andeffects the liberation of thesolids in suspension The capacity'of the chamber is so large that'a'. given body of water passes through it' slowly, and'thus permits the precipitation-of the heavier-solids, of which a large part sink to the bottom of thechamber. In said'application :I' have also described and claimed a means for preventing the lighter substances from entering into thetube chamber of boiler proper.

According to'tlie present invention]: provide a boiler inwhich' the sedimentation chamber is locatedhs before. Within this chamber I-provide' means: for compelling substantially the' -enti're body 'of water to travel-slowly to the -*p0int =-w'here it is fed into'the-boiler'pro er. I'alsoprovide means in said chamber orp reventing the ingressinto the boiler proper of the lighter substances which at least temporarily rise to the upper surface of the water. i

In the drawings wherein I have shown several embodiments of the invention,Fig-

ure 1 is a vertical sectionon the line 1-1 in Fig. 2'of one form of theinvention. Fig. 2 is a horizontal 'sectionon the line 2-2 in Fig. 1. Fig. 3 is-a vertical's'ection of another -modification. K

Referring first to'Figs. 1- and2, let A'indicate the boiler shell having a'bank of tubes B which are supported at their lower ends upon a tube plate C forming'the'upper wall of the fire-box. WVithin' theboil'er' is a shell E which preferably extends around the entire bank of tubes'a'nd is spaced apart from the boiler 'shell Ato form a chamber F.

This" chamber is closed at; its bottom by an annular ring-G, and is-preferably'openat -'-its top, at least-to such an extent that the pressures in the chamber F and the boiler proper'may' be equalized. The chamber F is" of relatively large dimensions and water is'fedinto the same bya feed pipe H, preferably located-'near'the bottom of the chain: her. The chamber constitutes a separat ing chamber wl'ii'ch in its general form'may be-shaped as desired,-it'beingessential to this feature of the'i'nvfention onlyfthat it be of large capacity, so that a considerable body of feed water will be contained therein whereby 'any given body of water will remain a relatively long" time\ within the boiler proper until it reaches the slot J- chamber before it is fed into the boiler proper. As a means forfeeding the water into the boiler proper I have shown a slot- J formed in the upper part of the shell 1C, preferably at the opposite side of the boiler -to that at which-the feed water enters.

heatof the shell E which is exposed on its' inner side to the boiler 'atcr, which is itsell" highly .heated. invention I introduce into the chamber a means for compelling practically all of the feed water in the separating chamber to travel a. tortuous course beforeit reaches the' ingress opening, into the boiler proper. This aids in the complete heating of the. entire body of feed water, and insures that practically all such water will remain in the separating chamber a-length of time sutticiently long to provide. abundanttime for preeipitatioi'i of the heavier solids and the rising; of the liglitermatters, suchas oils and tlocculent substances, to or near the surface. .1 very thorough purification hence takes place before the water enters the boiler proper. In Fig. 1 I have shown for this purpose a series of what may be called hallle plates which are indicated by the letters l. L. 'lihese ballle plates are preterably connected to the shells A and l!) with a substantially leak-tight joint by riveting or otlwrwisea The plates ll are arranged with their. upper ends above the normal teed water line (indicated by the line 3 but; their lower ends do not. reach the bottom of the separating chamber. The water hence cannot pass over the tops of such plates, but is compelled to flow beneath them. The pla-tesL' are reverscly arranged, that to say, their upperends are below the normal feed water line, and their lower ends are continued to the bottom ofthc separating chamber. The water in its trave l icnee. is compelled to pass over the topot the plates L.- Any suitable number of" such plates may be nrovided, but l. have shown. two plates L, and one plate'l/ on each side of the boiler. ty reference to Fig. 2 itwill be seen that the incoming water will divide and llow around opposite sides of the The construction of the separating chamber F in Fig. 1 maybe otherwise described as being divided .intol-wo semi-circular conr partments by the plate'L, each compartment having, battles TJ. The construction thus described provides also a means for trapping out the lighter or floating substances so as to prevent their entrance into the boiler proper. It will-be observed that ccording to the present highly heated.

.2 I Qt 9 4,656

when the separating chamber F is filled the one hand and below any accumulation'of lighter solids on the other hand.

In operationthe engineer will keep the water in'the boiler'proper at approximately the level of the gage cock 2. The feed water intrtalucedinto the pipe H will flow slowly along its tortuous channel, and become This process will assist in the dissociation of the solids, and the heavier substancesavillsink to the bottom while thelighter substances will rise to the top and become trapped a's the-water proceeds in its travel. The normal 'water level of the separating chamber is indicated by the line and by the time a given body of water has reached the point of the slot J it will have been greatly purilied, so that it is no longer a source of danger to the tubes and other tire-swept surfaces. \Vhen the floating or precipitated substances have accumulated .they may be blown out while the boiler is still in operation through the pipes M M, one ot which serves to relieve one of the compartments above referred to,'and the other the remaining compartment. Preferably 'two hand holes N N are provided whereby such compartments may be cleaned. This operation cannot, of'course, take place while the boiler is steaming.

Tn 'l igr. 3 l have illustrated another modi fieation of my invention wherein instead of vertical battles T. provide a series of horizontal battles t) and These battles are circular in form, and divide the feed water chamber, practically speaking, into' four annular cou'ipartments, which are lettered respectively 1 to 4. In the construction shown the feed water enters through the pipe H as before. into compartment 1, and [lows to the opposite side of the boiler where i rises through pipe 1 into compartment 2. It then flows in a reverse direction to the opposite side of the boiler and thence through pipe P into compartment 3. 'By a similar reverse travel it reaches eompart meat 41- from .which' it is fed to the boiler proper throughslot J, as in Figs. 1 and 2. The battle plates 0 O O insure the tortuous travel of the water,- which deposits some of its sedimentation in each of the chambers 1,- 2, 3 and 4. The lighter matters are trapped in each compartment by the pipes P B and P which extend downwardly from their respective baffle plates so that the water passing from one compartment'into pipe Q, Q," Q or Q, and also with ahand hole R R R or R The operation is similar to that described with regard to Figs. 1 .and- 2.

If: desired, the opening J referred to'in the foregoing description may be provided. 'with ahood such as is illustrated in.my

aforesaid application, said 'hood extending around the opening; and being "closed at its topand sides,'but being open at its bottom. This or any other conduit adapted to feed Water from below its surface through the opening J may be used if desired.

While I have shown in detail several em-. bodiments of the invention, it will be under stood-that I do not wish to be limited thereto as various changes can be made. therein Without departing from the invention.

The invention is primarily adapted for vertical tube boilers, although it maybe used in other types of boilers if desired.

Furthermore the particular character and.

arrangement of the several parts herein described is not essential to the invention, and these may be considerably varied in practice.

What I claim is 1. In a'boiler, the combination of a separating chamber, meanstending to prevent the circulation of water from the boiler proper to said chamber, means for feeding water from said chamber to the boiler proper, and means for providing a tortuous course for the water in said separating chamber.

2. In a boiler, the combination of a separating chamber,.means tending to prevent the circulation of water from the boiler proper to said chamber, means for feeding water from said chamber to the boiler proper, and means for providing a tortuous course for the Water in said separating chamber, said means comprising' members dividing said chamber into a plurality of compartments. I

3. In a boiler, the combination of a separating chamber, means tending to prevent the circulation of water from the boiler proper to said chamber, means for feeding water from said chamber to the boiler proper, and means for providing a tortuous course for the water in said separating chamber, said means comprising a plurality .of baflle plates.

4. In a boiler, the combination of a separating chamber, means tending to prevent the circulation of water from the boiler proper to said chamber, means for feeding water from said chamber to the boiler proper, and means for providing a tortuous course for the Water in' said separating of vertically-arranged battle plates.

.5. In a boiler, the combination of .a '-sepfrom said separatin chamber to-the boiler proper, and. a-plate nterposed in thetravel of the water in said separating. chamber, said plate extending abovethe normal surface of the water in said separating chamber.

6. In; a boiler, the combination of a separating chamber, and-means for causingthe water to travel a tortuous course through "chamber, said: means comprising a plurality arating chamber, means for feeding water said separating chamber and for preventing the how of floating substances into said boiler proper.

7. In a boiler, the combination of a separating chamber, a boiler proper, a'passagc from said separating chamber to said boiler proper, a plate in said chamber extending 1 abovethe normal water levelin said chamher, and a plate extending below such normal water level, said first-named plate being adapted to trap floatingsubstances from the feed water before it enters the boiler proper. p 8. In a boiler, the combination of a separating chamber, means for feeding water from said chamber to the boiler proper, and a plurality of means in said separating chamber for preventing the passage of floating substances into said boiler proper.

9. In a boiler, the combination of a separating chamber having its under side exposed to the Water, means for feeding water from said chamber to the boiler proper, and

' arating chamber having its under side exposed to the Water, means for feeding water from said chamber to the boiler proper, and means forproviding a tortuous course for the water in said separating chamber, said means comprising members dividing said chamber intoa plurality of compartments.

11. In a boiler, the combination of a separating chamber having its under side exposedto the water, means for feeding-water from said chamber to the boiler proper, and

means for providing a tortuous course for 'the water in said separating chamber, said means comprising a plurality ofba'l'lle plates so arranged that the water passes under one 'plate and over another.

12. In a-boiler, the combination of a boiler proper, a separating chamber extending around said boiler proper, and having a wall extending above the high 'water level in said boiler proper, means for feeding water from said chamber to said boiler proper near the top thereof, and means for providing a tortuous course for the water in said chamber.

' 13. In a boiler, the combination of a boiler r MUM...

extending above the high .water levelin said boiler proper, means for feeding water from said chamber to said boiler proper near the top thereof, and-a plurality of batlle plates in said chamber for providing a tortuous course for the water in said chamber. i

14. In a boiler, the combination of a boiler proper; a separating chamber extending aroundx said' boiler proper, and having a wall extending above the high water level in said boiler proper, means for feeding water from said chamber to said boiler proper near the top thereof, said 'Vallbeing imperforate from said means downwardly, and means for providing a tortuous course for. the water in said chamber.

15. In a boiler, the combination of a series of vertical tubes constituting the boiler around said tubes and having a wall extending above the high water level in said boiler proper, means for feeding water to'the lower part, of said separating chamber, means for feeding water from the lower part of said separating chamber to said boiler proper near the top of said wall, and meansfor providing a tortuous course for the water from said first-named feeding means to said lastnamed feeding means.

In witness whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

THOMAS T. PARKER. \Vitnesses l'lr'onxn V. Mvnns, Fiuin \Vnrrn.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Batents,

' Washington, I). C. l 

